物理化学学报 >> 2010, Vol. 26 >> Issue (12): 3175-3180.doi: 10.3866/PKU.WHXB20101141

电化学 上一篇    下一篇

5-磺基水杨酸辅助水热法制备Co-Ni层状双氢氧化物及其超电容性能

张方1, 原长洲2, 张校刚1, 章罗江1, 徐科1   

  1. 1. 南京航空航天大学材料科学与技术学院, 南京210016;
    2. 安徽工业大学材料科学与工程学院, 安徽马鞍山243002
  • 收稿日期:2010-07-06 修回日期:2010-08-15 发布日期:2010-12-01
  • 通讯作者: 张校刚 E-mail:azhangxg@163.com
  • 基金资助:

    国家重点基础研究发展计划项目(973)(2007CB209703)和国家自然科学基金(20633040, 20873064)资助

5-Sulfosalicylic Acid-Assisted Hydrothermal Synthesis and Supercapacitive Properties of Co-Ni Layered Double Hydroxides

ZHANG Fang1, YUAN Chang-Zhou2, ZHANG Xiao-Gang1, ZHANG Luo-Jiang1, XU Ke1   

  1. 1. College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China;
    2. School of Materials Science and Engineering, Anhui University of Technology, Maanshan 243002, Anhui Province, P. R. China
  • Received:2010-07-06 Revised:2010-08-15 Published:2010-12-01
  • Contact: ZHANG Xiao-Gang E-mail:azhangxg@163.com
  • Supported by:

    The project was supported by the National Key Basic Research Program of China (2007CB209703) and National Natural Science Foundation of China (20633040, 20873064).

摘要:

采用5-磺基水杨酸(SSA)辅助水热法制备了Co-Ni 层状双氢氧化物(CoxNi1-x LDHs), 通过X射线衍射(XRD)、傅里叶变换红外(FT-IR)光谱、场发射扫描电镜(FE-SEM)和透射电镜(TEM)研究其结构与形貌. 结果表明, 通过调控反应体系中Co、Ni 的配比, 可以得到不同形貌的CoxNi1-x LDHs. 在Co的摩尔分数为0.24时, 形成了由纳米片组装的花瓣状纳米球. 循环伏安和恒流充放电测试表明, 这种花瓣状结构的双氢氧化物在1 A·g-1电流密度下, 比电容值达到1735 F·g-1.

关键词: 超级电容器, 层状双氢氧化物, 5-磺基水杨酸, 水热法

Abstract:

Co-Ni layered double hydroxides (CoxNi1-x LDHs) were successfully synthesized by a 5- sulfosalicylic acid (SSA)-assisted hydrothermal process. Structural and morphological characterizations were performed using powder X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, field emission scanning electron microscopy (FE-SEM), and transmission electron microscopy (TEM). The results reveal that different morphologies of CoxNi1-x LDHs could be obtained by tuning the Co/Ni molar ratio. The CoxNi1-x LDHs exhibit petal-like nanospheres that are composed of nanoflakes at a Co molar fraction of 0.24. The LDH of this structure has a specific capacitance of 1735 F·g-1 at a current density of 1 A·g-1 as determined by cyclic voltammetry and galvanostatic charge-discharge.

Key words: Supercapacitor, Layered double hydroxide, 5-Sulfosalicylic acid, Hydrothermal method

MSC2000: 

  • O646